Stop mechanism.



w. H. MILLER.

STOP MECHANISM.'

APPLICATION FILED JULY 6.191s.

- 1 ,24; 1 ,4 1 6 Patented Sept. 25, 1917.

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WALTER- riois.

H. MILLER, 0]? ORANGE, NEW JERSEY.

s'ror MECHANISM.

To all whom it may concern:

Be it known that I. VALTER H. MILLER, a citizen of the United States,and a, resident of Orange, Essex county, New Jersey, have inventedcertain new and useful Imrovements in Stop Mechanisms, of which thefollowing is a description.

My invention relates to stop mechanisms designed particularly forautomatically stopping the rotation of the turntable of a phonographortalking machine when the reproducer stylus of such a machine hasreached a predetermined position with respect, to the phonograph orsound record carried by the turntable, but the invention is not limitedto this use. The principal object of my invention is to provide animproved device of the class referred to which is of simple and cheapconstruction and whichis easy to operate. One of the features of theinvention 'is the provision of a single device or member by which thestop mechanism may be rendered inoperative so as to permit the rotationof the turntable, and by which also the predetermined relative positionbetween the stylus and record at which the stop mechanism is applied tostop the rotation of the turntable may be varied at will. Other objectsof my invention will appear more fully in the following specificationand appended claims.

In order that my invention may be more clearly understood, attention isdirected to the accompanying drawing forming a part of thisspecification, in the several views of which corresponding parts aredesignated by the same reference characters, and in which:

Figure 1 is a plan view, partly broken away. of a phonogi aph equippedwith a stop mechanism in accordance with myinvention.

Fig. 2 is a side elevation of the apparatus shown in Fig. 1, the cabinetof the phonograph being shown in section and the record support beingpartly broken away; and Fig. 3 is an enlarged sectional view taken online 33 of-Fig. 1 showing a detail of construction.

Referring to the drawing, reference character 1 designates the cabinetof a well known type of phonograph in the upper portion of which ahorizontal plate or support 2 is suitably secured to the brackets 3,which are fixed to the inner Walls of the cabinet.

. preferably located in Fig. 2.

A horizontal record support or- Specification of Letters Patent.Patented Sept. 25 1917. Application filed July 6, 1916. Serial No.107,724.

turntable 4 having a depending circumferem tial flange 4 issuitablymounted above the top plate 2 on a vertical shaft 5. The shaft 5extends downwardly through the top plate 2 andis adapted to be actuatedto rotate the support 4 and the record 6 thereon bv means of a suitablemotor (not shown) just beneath top plate Reference character 7represents the horn or amplifier of cured to a vertical rod 8 locatedadjacentthe front/of the cabinet 1 by means of brackets, one of which isshown at 9 in Fig. 2.- The horn 7 extends from rod 8 rearwardly belowthe top plate 2, then upwardly past the top plate and record support,and then forwardly above the record support. A reproducer or sound box10 is secured to the small end of the'horn 7 in a position above therecord support 4. The reproducer shown is of the type described andclaimed in United States Patent No. 1.055.621 to Thomas A.' Edison,dated March 11. 1913. The reproducer stylus which traverses the recordis shown at 10 The vertical rod 8 by which the horn and 'reproducer areentirely supported is pivotally mounted in a suitable bearing in the topplate 2 and another bearing (not shown) below the horn, said vertical'rcd constituting meanswhereby the horn and reproducer are mounted forswinging movement about a .vertical axis to-permit the reproducer 10 totravel across the record 6. The rod 8 is also movable vertically andlongitudinally in its hearings to thereby effect bodily verticalmovement of the horn and reproducer to efl'ect movement of thereproducer into and out of operative position with respectto the recordsupport l and the record 6 carried thereby.- The longitudinal orvertical movement of-the rod 8 in its bearings to effect the raisingandlowering of the horn and reproduce'r is controlled by member 17 pivotedat 18' to the upper en of the rod 8, the latter projecting ab'ove th topplate. A member 20 in the form of a flat plate is 'sl idably butnon-rotatably mounted, on the rod 8 between the member 17 and the topplate 2. The memthe phonograph which is seits ber 17 bears on plate 20,and the latter acare .' tion 22 the forward edge of which, referring-toFig. 1, is arranged to abut against a 'shoulder'on the plate'20 to limitthe rotation of the fin er in a clockwise direction. The member 14comprises a handle and a cam portion 23 secured to the handle andengaging the member 20. When the handle of member 17 is in a verticalposition, as

shown in Fig. 2, flat surfaces of the cam bortions 23 engage the member20 to support the, rod 8 and born 7 and the reproe,

ducer '10 in their lowermost positions. *Uponturning the member 17 aboutpivot 18 from the position shown in Fig. 2 to a position at right anglesthereto, the curved surfaces of cam portions 23 coact with the member 20to lift the rod 8, horn 7 and reproducer and to support the same intheir raised or elevated positions. When the horn 7 is in its lowermostposition, as shown in Fig. 2, the reproducer is in operative position,the stylus thereof tracking the groove of the record 6, and suitablefeedingmechanism (not shown) is operative to turn the horn about'theaxis of the vertical rod 8' so as to move the reproducer across therecord 6. toward the center thereof at sub-.

stantially'the same rate as the record groove feeds. the stylus acrossthe record. "When the rod 8 and horn 7 are moved to their uppermostposition by means of the member 17, the reproducer 10 is carried toinoperative position with respect to the record, and thefeedingmechanism for moving the reproducer across the record is rendered ioperative. in a manner fully described and town in United States patentto Thomas A. Edison, No. 1,184,333, dated May 23, 1916.

The brake mechanism'for the phonograph comprises a lever 24 which ispivotally iniounted, as by means of a screw or pin 25, above the topplate 2 and below the record support 4. One arm of the bell crank lever24 is provided with a friction brake 26 adapted to engage the innersurface of the flange 4'of the record support to arrest the rotation ofthe latter. A- spring 27 coniiected at its ends respectively to the topplate 2and to the lever 24 constantly tends to turn the latter about itspivot to operative position with the brake 26 in engagement with theflange 4 on the record support. The arm of the lever 24 other than thatcarrying the friction pad 26 is pro- .vided with a portion extendingforwardly as-shown at 28, then upwardly as shown at 129, and thenhorizontally above the record support 4 as shown at 30. Between thelever 24: The forward and rear portions of. the detent or elevation 33,referring to Fig. 1, are inclined upwardly toward the said seat, so thatthe spring 34 may be engaged with said detent by turningthe lever 28 soas to bring said spring above said detent, the spring sliding upwardlyon the de-' tent and finally snapping into the seat therein. A dog 35 ispivotedto the plate 31, as at 36. This dog is provided with an inclinedface 37 which is arranged'to lift the spring 34 out of the recess orseat in the detent 33 and permit the spring 27 to turn the lever 28about its pivot. The movement of the dog 35' to release the spring fromthe detent 33 is efi'ected by the engagement of the finger. 20 with thecam surfaces 38 on said dog. A spring 39, tends to move the dog awayfrom the elevation or detent 33. The finger 20' is fed to the left,referring to Fig. 1, during the travel of the reproducer stylus from theperiphery toward the center of the record; and it will be seen thatby'turning the member or'plate 31 about its pivotal axis against theaction of spring 32, the finger 20 may be made to operate the releasingdog 35 to cause the operation of the brake at points corresponding withthe different relative positions of the reproducer stylus with respectto the record. of the relative position of the stylus with respect tothe record 'at which the stop mechanism is put into'operation to stopthe rotation of the record support, the hori zontal portion 30 of thebrake lever is formed in the shape of an index, the inner or extreme endof this horizontal portion being pointed. hen-the spring 34 is held inthe detent 33, the pointed end of the finger is located over theparticular groove in the record in which'the stylus will be located whenthe finger 20 moves into engagement with the cam surface 38 of the dog35. The action of the spring 32 tending to prevent rotation of the plate31 about pivot 25 is stronger than that of spring 27; so that when thespring 34 is held in theedetent 33, the spring 27 cannot turn said plateabout its pivot.

In operation, the record support being held against rotation by thebrake 26, and

To facilitate the predetermination wa'rdly to cause the spring 3a tosnap in inane-is the'deten't '33 therefor. By this operation the brake26 is released from the flange l and the turntable permitted to rotate.The

linger 3O isthen-adjusted until its inner end is located over' thegroove or portion of the record at which it is desired that the stylusshould be when the'brake mechanism is to be automatically applied, thismovement or adjustment of the finger causing the rotation' of the lever24: and with it the plate 31 against the action of spring 32. The handle17 is then operated to lower the stylus on the record and thereproduction of the record ensues. When the stylus reaches the point onthe record at which the reproduction is to cease, the finger 20" shiftsthe releasing dog to cause the spring 34 to be elevated and the brakelever 2% to be turned by the spring 27, whereupon the rotation of therecord support and the record carried thereby arest-opped by theengagement of the brake--26 with the flange 4 on the record support.

With this construction the phonograph may be automatically stopped atany desired point in the reproduction of the record. Itwill be seen thatthe member 30, serves not only as a means to start the rotation of therecord support and the record carried thereby, but also as a means foradjusting or setting the stop mechanism so as to cause the phonograph tobe stopped at the desired point in the reproduction of the record.

Various modifications may be made in the specific construction disclosedwithout departing from the spirit of my invention.

Having now described my invention, WhatI claim as new and desire toprotect by Letters Patent is as follows: p

1. T he'combination with a rotatable memher and a second member movablerelatively to each other, braking means for said rotatable member,automatic means for eiiect- 'ing the operation of said braking meansduring the relative movement of said members, and unitary means forrendering said braking means inoperative and for controlling therelative position between said mem bers at which said automatic means isrendered operative, substantially as described.

2. The combination of a rotatable member, a traveling member.movablerelatively thereto, braking means for said rotatable member,means for holding said braking means in inoperative position, means forautomatictlly releasing said braking means from said holding meansduring the movement of said traveling member, and unitary means forrendering said holding means operative and for varying the position ofsaid traveling member at which said releasing means is renderedoperative, substantiallyas described The. combination of a rotatablememher, a traveling member movable relatively thereto, braking means forsaid rotatable member, latching means for holding said braking means ininoperative position,

means for automatically releasing said latching means when saidtraveling member has reached a predetermined position in its ing memberhas reached a predetermined position in its movement, said automaticmeans comprising a retaining member, a releasing member, and a supportfor said releasing member on which the latter is movable, said supportbeing adjustable about the axis of said braking means, substantially asdescribed.

5. The combination of a rotatable memher, a traveling member movablerelatively thereto, braking means for said rotatable member pivotedabout a given axis for movement into and out of braking position, meansfor holding said braking means in inoperative position, said holdingmeans be-,

ing adjustable about the pivotal axis of said braking means, and meansfor automatically releasing said braking means from said holding meanswhen said traveling member has reached a predetermined position in itsmovement, substantially as described.

6. The combination with a rotatable memher and a traveling membermovable rela tively to each other, of braking means for said rotatablemember, adjustable means for holding said braking means in inoperativeposition, yielding means for-holding said adjustable means in adjustedposition, and automatic means for releasing said braking meansfrom saidholding means when said members have reached a predetermined relativeposition, substantially as described.

7. The combination of a rotatable memher, a traveling member movablerelatively thereto, braking means for said rotatable member, adjustablemeans for holding said braking means in inoperative position, frictionmeans for holding said adjustable means in adjusted position, and meansfor automatically releasing said braking means from said holding meanswhen said traveling member has reached a predetermined position in itsmovement, substantially as described. I

8. The combination with a rotatable'mernher and a second member movablerelatively 13s to each other, of braking means for said rotatablemember, means for holding said braking member in inoperative position,means for automatically releasing said braking means from said holdingmeans when the members have reached a predetermined relative position,and unitary means for rendering said holding means operative and forvarying the relative position between said members at which saidreleasing means is rendered operative, substantially as described.

9. The combination with a rotatable member and a second member movablerelatively to each other, of braking means for said rotatable member,means for holding said braking means in inoperative position, meansincluding a cam for automatically releasing said braking means from saidholding means when said members have reached a predetermined relativeposition, and unitary means for rendering said holding means op erativeand for varying the relative position between said members at which saidreleasing means is rendered operative, substantially as described.

10. The combination with a rotatable member and a second member movablerelatively to each other, of braking means for arresting the rotation ofsaid rotatable member, means for holding said braking means ininoperative position, means including a device movable by said secondmember for automatically releasing said braking means from said holdingmeans when said members have reached a predetermined relative position,and unitary means for rendering said holding means operative and forvarying the relative position between said members at which saidreleasing means is rendered operative, substantially as described.

11. The combination with a rotatable member and a second member movablerelatively to each .other, of braking means for said rotatable member,means comprising a spring for holding said braking means inoperative,and means including a device movable by said second member and a cammovable by said device for automatically rendering said'holding meansinoperative when said members have reached a predetermined relativeposition, substantially as described.

12. The combination with a rotatable member anda second member movablerelatively to each other, of braking means for said rotatable member,automatic means for said braking means operativev when said.

members have reached a predetermined relative position, and meanscomprising an index connected to said braking means and movable oversaid rotatable memberfor rendering said braking means inoperative andfor controlling the relative position between said members at which saidbraking means is rendered operative bysaid automatic means,substantially as described.

14. The combination with a movable 1 member and a second-membermovablerelatively to each other, of braking means for said movablemember, means tending to apply said braking means, adjustable means forautomatically rendering said brake applying means operative when saidmembers have reached a predetermined relative position, and yieldingmeans for retaining said adjustable means in adjusted position, saidretaining means being immovable by said brake applying means,substantially as described. I

15. The 4 combination with a movable member and a second member movablerelatively to each other, braking means for said movable member, springmeans tending to apply said braking means, adjustable means forautomatically rendering said brake .applying -means operative when saidmembers, have reached a predetermined relative position, and springmeans for retaining said adjustable meansin adjusted position,

said second named spring means being stronger than said first namedspring means,

substantially as described.

This specification signed and witnessed this 24 day of June, 1916. v p

" WALTER H. MILLER.

Witnesses WILLIAM A. HARDY, J. UNGER. j

